puppet: Add Zulip specific postgresql configuration for 13.

Based on the work done in a03e4784c7.

puppet/zulip/templates/postgresql/13/postgresql.conf.template.erb

@@ -38,15 +38,15 @@
 # The default values of these variables are driven from the -D command-line
 # option or PGDATA environment variable, represented here as ConfigDir.
 
-data_directory = '/var/lib/postgresql/13/main'		# use data in another directory
+data_directory = '<%= scope["zulip::postgresql_base::postgresql_datadir"] %>'		# use data in another directory
 					# (change requires restart)
-hba_file = '/etc/postgresql/13/main/pg_hba.conf'	# host-based authentication file
+hba_file = '<%= scope["zulip::postgresql_base::postgresql_confdir"] %>/pg_hba.conf'	# host-based authentication file
 					# (change requires restart)
-ident_file = '/etc/postgresql/13/main/pg_ident.conf'	# ident configuration file
+ident_file = '<%= scope["zulip::postgresql_base::postgresql_confdir"] %>/pg_ident.conf'	# ident configuration file
 					# (change requires restart)
 
 # If external_pid_file is not explicitly set, no extra PID file is written.
-external_pid_file = '/var/run/postgresql/13-main.pid'			# write an extra PID file
+external_pid_file = '/var/run/postgresql/<%= scope["zulip::postgresql_common::version"] %>-main.pid'			# write an extra PID file
 					# (change requires restart)
 
 
@@ -547,7 +547,7 @@ log_line_prefix = '%m [%p] %q%u@%d '		# special values:
 					#   %q = stop here in non-session
 					#        processes
 					#   %% = '%'
-					# e.g. '<%u%%%d> '
+					# e.g. '<%%u%%%d> '
 #log_lock_waits = off			# log lock waits >= deadlock_timeout
 #log_parameter_max_length = -1		# when logging statements, limit logged
 					# bind-parameter values to N bytes;
@@ -566,7 +566,7 @@ log_timezone = 'Etc/UTC'
 # PROCESS TITLE
 #------------------------------------------------------------------------------
 
-cluster_name = '13/main'			# added to process titles if nonempty
+cluster_name = '<%= scope["zulip::postgresql_common::version"] %>/main'			# added to process titles if nonempty
 					# (change requires restart)
 #update_process_title = on
 
@@ -582,7 +582,7 @@ cluster_name = '13/main'			# added to process titles if nonempty
 #track_io_timing = off
 #track_functions = none			# none, pl, all
 #track_activity_query_size = 1024	# (change requires restart)
-stats_temp_directory = '/var/run/postgresql/13-main.pg_stat_tmp'
+stats_temp_directory = '/var/run/postgresql/<%= scope["zulip::postgresql_common::version"] %>-main.pg_stat_tmp'
 
 
 # - Monitoring -
@@ -779,3 +779,62 @@ include_dir = 'conf.d'			# include files ending in '.conf' from
 #------------------------------------------------------------------------------
 
 # Add settings for extensions here
+timezone = 'UTC'
+default_text_search_config = 'zulip.english_us_search'
+
+log_destination = 'stderr'
+logging_collector = on
+log_directory = '/var/log/postgresql'
+log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log'
+log_rotation_age = 7d
+log_rotation_size = 100MB
+log_min_duration_statement = 500
+log_line_prefix = '%m [%c]: [%l-1] '
+log_checkpoints = on
+log_lock_waits = on
+log_temp_files = 0
+log_autovacuum_min_duration = 100
+
+autovacuum_freeze_max_age = 2000000000
+vacuum_freeze_min_age     = 1000000000
+vacuum_freeze_table_age   = 1800000000
+
+# Performance settings
+max_connections = 1000
+maintenance_work_mem = <%= scope["zulip::profile::postgresql::maintenance_work_mem"] %>MB
+effective_cache_size = <%= scope["zulip::profile::postgresql::effective_cache_size"] %>MB
+work_mem = <%= scope["zulip::profile::postgresql::work_mem"] %>MB
+shared_buffers = <%= scope["zulip::profile::postgresql::shared_buffers"] %>MB
+wal_buffers = 4MB
+checkpoint_completion_target = 0.7
+<% if @random_page_cost != '' -%>
+random_page_cost = <%= @random_page_cost %>
+<% end -%>
+<% if @effective_io_concurrency != '' -%>
+effective_io_concurrency = <%= @effective_io_concurrency %>
+<% end -%>
+
+<% if @listen_addresses != '' -%>
+listen_addresses = <%= @listen_addresses %>
+<% end -%>
+
+<% if @replication != '' -%>
+# Primary replication settings (ignored on replica)
+wal_level = hot_standby
+max_wal_senders = 5
+archive_mode = on
+archive_command = '/usr/bin/timeout 10m /usr/local/bin/env-wal-g wal-push %p'
+
+# Replica settings (ignored on primary)
+hot_standby = on
+<% end -%>
+
+<% if @ssl_cert_file != '' -%>
+ssl_cert_file = '<%= @ssl_cert_file %>'		# (change requires restart)
+<% end -%>
+<% if @ssl_key_file != '' -%>
+ssl_key_file = '<%= @ssl_key_file %>'		# (change requires restart)
+<% end -%>
+<% if @ssl_ca_file != '' -%>
+ssl_ca_file = '<%= @ssl_ca_file %>'		# (change requires restart)
+<% end -%>